drivers/crypto/intel/qat/qat_common/qat_bl.h

Source file repositories/reference/linux-study-clean/drivers/crypto/intel/qat/qat_common/qat_bl.h

File Facts

System
Linux kernel
Corpus path
drivers/crypto/intel/qat/qat_common/qat_bl.h
Extension
.h
Size
1775 bytes
Lines
69
Domain
Driver Families
Bucket
drivers/crypto
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct qat_alg_buf {
	u32 len;
	u32 resrvd;
	u64 addr;
} __packed;

struct qat_alg_buf_list {
	/* New members must be added within the __struct_group() macro below. */
	__struct_group(qat_alg_buf_list_hdr, hdr, __packed,
		u64 resrvd;
		u32 num_bufs;
		u32 num_mapped_bufs;
	);
	struct qat_alg_buf buffers[];
} __packed;
static_assert(offsetof(struct qat_alg_buf_list, buffers) == sizeof(struct qat_alg_buf_list_hdr),
	      "struct member likely outside of __struct_group()");

struct qat_alg_fixed_buf_list {
	struct qat_alg_buf_list_hdr sgl_hdr;
	struct qat_alg_buf descriptors[QAT_MAX_BUFF_DESC];
} __packed __aligned(64);

struct qat_request_buffs {
	struct qat_alg_buf_list *bl;
	dma_addr_t blp;
	struct qat_alg_buf_list *blout;
	dma_addr_t bloutp;
	size_t sz;
	size_t sz_out;
	bool sgl_src_valid;
	bool sgl_dst_valid;
	struct qat_alg_fixed_buf_list sgl_src;
	struct qat_alg_fixed_buf_list sgl_dst;
};

struct qat_sgl_to_bufl_params {
	dma_addr_t extra_dst_buff;
	size_t sz_extra_dst_buff;
	unsigned int sskip;
	unsigned int dskip;
};

void qat_bl_free_bufl(struct adf_accel_dev *accel_dev,
		      struct qat_request_buffs *buf);
int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
		       struct scatterlist *sgl,
		       struct scatterlist *sglout,
		       struct qat_request_buffs *buf,
		       struct qat_sgl_to_bufl_params *params,
		       gfp_t flags);

static inline gfp_t qat_algs_alloc_flags(struct crypto_async_request *req)
{
	return req->flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : GFP_ATOMIC;
}

#endif

Annotation

Implementation Notes